@media screen and (max-width: 1365px) {
    .visible-middle-screen {
        display: block;
    }

    .visible-max-screen {
        display: none;
    }

    .visible-max-middle-screen {
        display: none;
    }

    .visible-max-max-screen {
        display: none;
    }

    .visible-middle-display-screen {
        display: none;
    }

    .f-bg {
        width: 100vw;
        height: 100vh;
        position: relative;

    }

    body, html {
        padding: 0 !important;
        margin: 0 !important;
        overflow: hidden;
    }

    .header > img:nth-child(1) {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 40px;
    }

    .header > div:nth-child(2) {
        position: absolute;
        top: 0;
        height: 40px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        border-radius: 100%;
    }

    .header > div:nth-child(2) > img {
        border-radius: 100%;
        width: 25px;
        height: 25px;
        margin-left: 2vw;
    }

    .header > span:nth-child(3) {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 40px;
        text-align: center;
        color: #fff;
        font-size: 15px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .f-form-input {
        width: 100%;
        position: absolute;
        height: 160px;
        top: 80px;

    }

    .f-input {
        width: 80%;
        height: 45px;
        padding-left: 3vw;
        margin-left: 10%;
        margin-top: 20px;
        border-left: none;
        border-top: none;
        border-right: none;
    }

    .f-info {
        position: absolute;
        top: 60px;
        width: 100%;
        text-align: center;
        font-size: 1.5rem;
        color: goldenrod;
    }

    .f-form-valid {
        position: absolute;
        top: 150px;
        width: 89%;
        margin-left: 2%;
    }

    .f-form-valid > input {
        width: 58%;
        height: 45px;
        padding-left: 3vw;
        margin-left: 10%;
        border-left: none;
        border-top: none;
        border-right: none;
    }

    .f-form-valid > img {
        width: 30%;
        height: 45px;
        border-radius: 5px;
    }

    .f-form-other {
        position: absolute;
        top: 290px;
        width: 80%;
        margin-left: 11%;
        display: flex;
        justify-content: space-between;
    }

    .f-form-button {
        position: absolute;
        top: 350px;
        height: 40px;
        width: 80%;
        margin-left: 10%;
        display: flex;
        justify-content: space-between;

        margin-top: 20px;
    }

    .f-form-button > button {
        width: 100%;
        height: 40px;
        font-size: 20px;
        border: none;
        background: #17afdc;
        color: #fff;
        border-radius: 5px;
    }

    .f-form-button > button:hover, button:active {
        background: #2d78ef;
    }

    .f-footer {
        position: absolute;
        bottom: 30px;
        width: 80%;
        margin-left: 10%;
        display: flex;
        justify-content: space-between;
    }
}

/* ___________________________________________________________ */
@media (min-width: 1366px) {
    .visible-min-screen {
        display: none;
    }

    .visible-middle-screen {
        display: none;
    }

    .visible-max-screen {
        display: none;
    }

    .visible-max-middle-screen {
        display: block;
    }

    .visible-max-max-screen {
        display: none;
    }

    .welcome {
        width: 100%;
        position: fixed;
        top: 50px;
        text-align: center;
        left: 0;
        color: #c0c0c0;
        font-size: 40px;
        font-family: "宋体";
    }

    .f-bg {
        width: 360px;
        height: 420px;
        background-color: #c5e5fe;
        position: absolute;
        right: 16.8%;
        top: 140px;
        border-radius: 2px;
    }

    .header {
        width: 100%;
        height: 84px;
        display: flex;
        align-items: center;
    }

    .header > span {

        width: 100%;
        display: block;
        height: 28px;
        text-align: center;
        font-family: "MV Boli";
        /* display: flex;
        flex-direction: column;
        justify-content: center; */
        color: #5ca7f8;
        font-size: 34px;
    }

    /* .header > img{
        position: absolute;
        width: 100%;
        top:0;
        left:0;
        height: 35px;
        border-top-left-radius: 2px;
        border-top-right-radius: 2px;
    } */
    .f-info {
        margin-top: 375px;
        position: absolute;
        width: 100%;
        top: 0;
        left: 0;
        height: 30px;
        text-align: center;
        color: #ef8808;
        font-size: 14px;
        display: block;
    }

    .f-form-input {

        height: 210px;
        width: 100%;
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        align-content: space-between;

    }

    .f-form-input input {
        /* position: absolute; */
        width: 72%;
        height: 50px;
        border-radius: 7px;
        text-align: center;
        display: flex;

        flex-direction: column;
        justify-content: center;
        border: none;
        background: #fff;
        margin-left: 13%;
    }

    /* .f-form-input > input:nth-child(2){
        
        
        width: 72%;
        height: 40px;
        border-radius: 5px;
        display: flex;
       
        flex-direction: column;
        justify-content: center;
        border: 1px solid gray;
        background: #fff;
        padding-left: 15px;
    } */
    /* .f-form-input nth-child(3){
        position: absolute;
        left: 5%;
        width: 20%;
        height: 40px;
        border-radius: 5px;
        text-align: center;
        display: flex;
        top: 120px;
        flex-direction: column;
        justify-content: center;
        border: 1px solid gray;
        background: #fff;
    }
    .f-form-input > input:nth-child(4){
        position: absolute;
        left: 25%;
        width: 70%;
        height: 40px;
        border-radius: 5px;
        display: flex;
        top: 120px;
        flex-direction: column;
        justify-content: center;
        border: 1px solid gray;
        background: #fff;
        padding-left: 15px;
    } */
    .f-form-valid {
        /* position: absolute;
        top: 170px; */
        width: 83%;
        height: 50px;
        margin-left: 2%;
        display: flex;

    }

    .f-form-valid > input:nth-child(1) {
        /* position: absolute;
         left: 5%; */
        /* width: 200px; */
        height: 50px;
        border-radius: 5px;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
        border: 1px solid gray;
        background: #fff;
        flex: 3;
    }

    .f-form-valid > img:nth-child(2) {
        float: left;
        margin-left: 0;
        /* width: 37%; */
        height: 50px;
        border-radius: 5px;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
        border: 1px solid gray;
        background: #fff;
        flex: 1;
    }

    .f-form-other {
        width: 72%;
        left: 13%;
        position: absolute;
        display: flex;
        justify-content: space-between;
        margin-top: 0px;
    }

    .f-form-other > a {
        cursor: pointer;
    }

    .f-form-button {
        width: 72%;
        position: absolute;
        left: 13%;
        margin-top: 25px;
    }

    .f-form-button > button {
        width: 100%;
        height: 50px;
        font-size: 15px;
        border: 1px solid gray;
        border-radius: 5px;
        color: white;
        background: #3b92f9;
    }

    .f-form-button > button:hover {
        color: white;
        background: #22467f;
        transition: 2s all;
    }

    .f-boty-footer {
        position: absolute;
        bottom: 10px;
        height: 30px;
        display: flex;
        justify-content: space-between;
        width: 96%;
        left: 2%;
        border-top: 1px solid gray;
    }

    .f-boty-footer > a {
        cursor: pointer;
    }

    .f-img-bg {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
    }

    .bgLeft {
        position: absolute;
        z-index: 100;
        width: 320px;
        height: 320px;
        margin-left: 280px;
        margin-top: 40px;
        /* background-color: #333333; */
        border-radius: 50%;
        top: 160px;
        left: -10%;
    }

    /* .bgLeft .zj{
        position: absolute;
        width: 100%;
        height: 100%;
        border-radius: 50%; */
    .bgLeft ul {
        position: absolute;
        width: 100%;
        height: 100%;
        border-radius: 50%;
        margin-top: -9%;
        animation: rotate 8s infinite;
    }

    .bgLeft ul li {
        position: absolute;
        width: 80px;
        height: 80px;
        /* background-color: yellow; */
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .bgLeft ul li:nth-child(1) {
        top: -39px;
        left: 140px;
    }

    .bgLeft ul li:nth-child(2) {
        top: 23px;
        left: 265px;
    }

    .bgLeft ul li:nth-child(3) {
        top: 139px;
        left: 317px;
    }

    .bgLeft ul li:nth-child(4) {
        top: 266px;
        left: 263px;
    }

    .bgLeft ul li:nth-child(5) {
        top: 312px;
        left: 140px;
    }

    .bgLeft ul li:nth-child(6) {
        top: 266px;
        left: 17px;
    }

    .bgLeft ul li:nth-child(7) {
        top: 139px;
        left: -28px;
    }

    .bgLeft ul li:nth-child(8) {
        top: 23px;
        left: 23px;
    }

    .bgLeft ul li i {
        width: 100%;
        height: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .iconfont {
        color: #C0C0C0;
        width: 100%;
        height: 100%;
        font-size: 80px !important;
    }
}

/* __________________________________________________________ */
@media (min-width: 1520px) {

    .visible-min-screen {
        display: none;
    }

    .visible-middle-screen {
        display: none;
    }

    .visible-max-screen {
        display: none;
    }

    .visible-max-middle-screen {
        display: none;
    }

    .visible-max-max-screen {
        display: block;
    }

    .welcome {
        width: 100%;
        position: fixed;
        top: 70px;
        text-align: center;
        color: #c0c0c0;
        font-size: 40px;
        font-family: "宋体";
        left: 0;
    }

    .f-bg {
        width: 380px;
        height: 420px;
        background-color: #c5e5fe;
        position: absolute;
        right: 16.8%;
        top: 300px;
        border-radius: 2px;
    }

    .header {
        width: 100%;
        height: 84px;
        display: flex;
        align-items: center;
    }

    .header > span {

        width: 100%;
        display: block;
        height: 28px;
        text-align: center;
        font-family: "MV Boli";
        /* display: flex;
        flex-direction: column;
        justify-content: center; */
        color: #5ca7f8;
        font-size: 34px;
    }

    /* .header > img{
        position: absolute;
        width: 100%;
        top:0;
        left:0;
        height: 35px;
        border-top-left-radius: 2px;
        border-top-right-radius: 2px;
    } */
    .f-info {
        margin-top: 375px;
        position: absolute;
        width: 100%;
        top: 0;
        left: 0;
        height: 30px;
        text-align: center;
        color: #ef8808;
        font-size: 14px;
        display: block;
    }

    .f-form-input {

        height: 210px;
        width: 100%;
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        align-content: space-between;

    }

    .f-form-input input {
        /* position: absolute; */
        width: 72%;
        height: 50px;
        border-radius: 7px;
        text-align: center;
        display: flex;

        flex-direction: column;
        justify-content: center;
        border: none;
        background: #fff;
        margin-left: 13%;
    }

    /* .f-form-input > input:nth-child(2){
        
        
        width: 72%;
        height: 40px;
        border-radius: 5px;
        display: flex;
       
        flex-direction: column;
        justify-content: center;
        border: 1px solid gray;
        background: #fff;
        padding-left: 15px;
    } */
    /* .f-form-input nth-child(3){
        position: absolute;
        left: 5%;
        width: 20%;
        height: 40px;
        border-radius: 5px;
        text-align: center;
        display: flex;
        top: 120px;
        flex-direction: column;
        justify-content: center;
        border: 1px solid gray;
        background: #fff;
    }
    .f-form-input > input:nth-child(4){
        position: absolute;
        left: 25%;
        width: 70%;
        height: 40px;
        border-radius: 5px;
        display: flex;
        top: 120px;
        flex-direction: column;
        justify-content: center;
        border: 1px solid gray;
        background: #fff;
        padding-left: 15px;
    } */
    .f-form-valid {
        /* position: absolute;
        top: 170px; */
        width: 83%;
        height: 50px;
        margin-left: 2%;
        display: flex;

    }

    .f-form-valid > input:nth-child(1) {
        /* position: absolute;
         left: 5%; */
        /* width: 200px; */
        height: 50px;
        border-radius: 5px;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
        border: 1px solid gray;
        background: #fff;
        flex: 3;
    }

    .f-form-valid > img:nth-child(2) {
        float: left;
        margin-left: 0;
        /* width: 37%; */
        height: 50px;
        border-radius: 5px;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
        border: 1px solid gray;
        background: #fff;
        flex: 1;
    }

    .f-form-other {
        width: 72%;
        left: 13%;
        position: absolute;
        display: flex;
        justify-content: space-between;
        margin-top: -2px;
    }

    .f-form-other > a {
        cursor: pointer;
    }

    .f-form-button {
        width: 72%;
        position: absolute;
        left: 13%;
        margin-top: 25px;
    }

    .f-form-button > button {
        width: 100%;
        height: 50px;
        font-size: 15px;
        border: 1px solid gray;
        border-radius: 5px;
        color: white;
        background: #3b92f9;
    }

    .f-form-button > button:hover {
        color: white;
        background: #22467f;
        transition: 2s all;
    }

    .f-boty-footer {
        position: absolute;
        bottom: 10px;
        height: 30px;
        display: flex;
        justify-content: space-between;
        width: 96%;
        left: 2%;
        border-top: 1px solid gray;
    }

    .f-boty-footer > a {
        cursor: pointer;
    }

    .f-img-bg {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
    }

    .bgLeft {
        position: absolute;
        z-index: 100;
        width: 360px;
        height: 360px;
        margin-left: 25%;
        margin-top: 35%;
        /* background-color: #333333; */
        border-radius: 50%;
        top: -200px;
        left: -10%;
    }

    /* .bgLeft .zj{
        position: absolute;
        width: 100%;
        height: 100%;
        border-radius: 50%; */
    .bgLeft ul {
        position: absolute;
        width: 100%;
        height: 100%;
        border-radius: 50%;
        top: -35%;
        /* margin-top: -20%;
        margin-left: 25%; */
        animation: rotate 8s infinite;
    }

    .bgLeft ul li {
        position: absolute;
        width: 80px;
        height: 80px;
        /* background-color: yellow; */
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .bgLeft ul li:nth-child(1) {
        top: -39px;
        left: 140px;
    }

    .bgLeft ul li:nth-child(2) {
        top: 23px;
        left: 265px;
    }

    .bgLeft ul li:nth-child(3) {
        top: 139px;
        left: 317px;
    }

    .bgLeft ul li:nth-child(4) {
        top: 266px;
        left: 263px;
    }

    .bgLeft ul li:nth-child(5) {
        top: 312px;
        left: 140px;
    }

    .bgLeft ul li:nth-child(6) {
        top: 266px;
        left: 17px;
    }

    .bgLeft ul li:nth-child(7) {
        top: 139px;
        left: -28px;
    }

    .bgLeft ul li:nth-child(8) {
        top: 23px;
        left: 23px;
    }

    .bgLeft ul li i {
        width: 100%;
        height: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .bgLeft ul li i:hover {
        color: #3478f7;
    }

    .iconfont {
        color: #C0C0C0;
        width: 100%;
        height: 100%;
        font-size: 80px !important;
    }

}
@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    45% {
        transform: rotate(340deg);
    }
    80% {
        transform: rotate(-50deg);
    }
    100% {
        transform: rotate(0deg);
    }
}
body, html {
    overflow: hidden;
}